Brick with initial rate of absorption (IRA) less than 5gm/min/30 in2 can be used successfully when laid in mortar having low water retention. In this research program, brick with IRA near 1 gm/min/30 in2 and 4 gm/min/30 in2 were combined with seven different mortars. Mortar materials were portland cement/lime, mortar cement and masonry cement. A control was established by combining a brick with a mid-range IRA, 15 gm/min/30 in2, and portland cement/lime mortars. Flexural bond strengths were evaluated using the bond wrench. The combinations of materials which resulted in the highest and lowest bond strengths for each of the cementitious materials types were tested for water penetration resistance. This paper presents the parameters of the program, material properties, results, and conclusions. |
